 #include <iostream>
#include <string>
#include <stdio.h>

using namespace std;
int main()
{
	string str8;
	string str9 = "0123456789";
    str8.assign(1, str9.end());//把迭代器之间的字符赋给字符串 
    cout << str8 << endl; 
    return 0;
}
 